US3524388A - Compressor housing fabricated from prefabricated sheet metal components - Google Patents

Compressor housing fabricated from prefabricated sheet metal components Download PDF

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Publication number
US3524388A
US3524388A US684301A US3524388DA US3524388A US 3524388 A US3524388 A US 3524388A US 684301 A US684301 A US 684301A US 3524388D A US3524388D A US 3524388DA US 3524388 A US3524388 A US 3524388A
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US
United States
Prior art keywords
band
sheet metal
parallel
support
compressor housing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US684301A
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English (en)
Inventor
Arne F Enemark
Knud V Valbjorn
Kjeld Kjeldsen
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Danfoss AS
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Danfoss AS
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Filing date
Publication date
Application filed by Danfoss AS filed Critical Danfoss AS
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Publication of US3524388A publication Critical patent/US3524388A/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
    • F04B39/122—Cylinder block
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B31/00—Compressor arrangements
    • F25B31/02—Compressor arrangements of motor-compressor units

Definitions

  • the parallel 6clalms4nrawmg Flgs' 'walls are each provided with an opening coaxial with said US. Cl 92/161, band, and a bearing sleeve is attached to at least one of the 417/3 l2 parallel walls coaxial with the opening thereon.
  • Cl F04b 39/12 The components are prefabricated independently and as- Field of Search 230/58, Visd without need of tools for assembly. They are soldered 232, 238 or otherwise fixed in assembly without fastensers.
  • This invention relates generally to compressors and more particularly to refrigerant compressors in which essential parts consist of sheet metal, and to a method of manufacturing such compressors.
  • the present invention has as a principal object to point out ways of producing a compressor, from sheet metal components, which is rigid and can be manufactured without assembly problems.
  • this object is achieved in that, between two substantially parallel walls, are arranged a cylindrical bushing and an up-ended support band the ends of which bear on both sides ofthe cylinder; the rest ofthe band is bent in the shape ofa ring.
  • the support band is provided with external bends which form radial struts extending outwardly as far as the circumferential wall portion.
  • These external bends or folds of the support band give increased rigidity and fix the support band, and thus the cylinder, in the correct position relative to the circumferential wall portion, so that it is possible to effect assembly without auxiliary tools at least with regard to these components.
  • sealed chambers are formed between the components which may serve as silencing chambers.
  • Support of a cylindrical bushing or sleeve is preferably ob tained by providing cylindrical recesses in the parallel walls. This reduces the required overall height of the structure outside the cylinder. Furthermore, the cylinder is thus accurately positioned relative to the parallel wall portions. Since the relative positions of cylinder, support band and circumferential wall portion are likewise accurately secured, precise positional co-ordination of all parts is ensured. It is advisable, furthermore, for the cylinder sleeve to be not only in linear, but in surface contact with the parallel wall portions.
  • the last-mentioned advantage may also be achieved with regard to the remaining cylinder circumference if the two ends of the support band are likewise provided with, preferably cylindrical, recesses.
  • the relative position of the parts can be additionally secured if one of the parallel wall portions is integral with another component.
  • the circumferential wall portion and one of the parallel wall portions may be integral with one another, so that a pot-shaped component is obtained.
  • the other parallel wall may then be substituted by the carrying element supporting the motor, for example.
  • the two parallel walls are constructed in the form of a U-shaped sheet metal element.
  • the circumferential wall portions may likewise consist of an up-ended annular band placed between parallel wall portions. Assembly is effected simply by sliding the cylinder bushing or sleeve, the support band and the circumferential band into the U-shaped sheet metal element.
  • the U- shaped sheet metal element may have bent lugs for fastening the stator of the drive motor and a central depression in which a bearing can be accommodated. It thus also assumes the function of a motor-supporting element.
  • the invention provides a vent, which preferably faces the motor winding, which may be provided between the walls of one of the radial bends or struts of the support band, and an oil guard may be fitted between this vent and the crank pin.
  • a vent is surrounded on three sides by the support band while, on the fourth side, it is covered by the oil guard.
  • the guard plate may be supported directly by the support band. Consequently, the vent region is not accessible to oil and cannot clog up with oil.
  • both parallel wall portions provide bearings for a drive crank shaft. Since two such parallel wall portions, at a pre-determined distance from one another, are available in the shape of a very rigid structure, they can, of course, serve as a safe support for the shaft.
  • the method of the invention for manufacturing a compressor of this type is characterized in that at least the support band is pre-fabricated in such a way as to contact its supports resiliently, and in that the components are brazed in this condition. If, during assembly, the support band bears resiliently on the cylindrical bushing and the circumferential wall portion, or the parallel wall portions bear resiliently on the components situated therebetween, accurate positional co-ordination is obtained, and this condition cannot be disturbed by minor vibrations. Consequently, these parts can be assembled without auxiliary tools.
  • FIG. 2 is a section view along the section line 2-2 of FIG. I.
  • FIG. 3 is a cross-section view of another embodiment of the invention.
  • FIG. 4 is a plan view partially in section along the line 4-4 of FIG. 3.
  • a vent-hole 19 is provided, IFIG. l, in the parallel wall portion 4 of the support element 5, within an external bend 18. its position is indicated by broken lines in FIG. 2 although it is not visible in this sectional representation.
  • This aperture is screened, in a direction which is a direction toward the crankshaft, not shown, by a guard plate 20 which is between the two lateral walls of the radial bend 18 which assumes a clamping function.
  • the guard plate has two webs 21, 22 which define a venting slot 23.
  • the upper web 21 projects radially farther toward the center than the lower web 22. This largely prevents the vent-hole 19 from clogging up with oil.
  • the components constituting the various walls 1, 2, 4 and the support band 15 form four sealed silencing chambers 24, 25, 26 and 27. From these chambers, bores or openings 28 communicate with the outside through the upper parallel wall portion 1.
  • a channelled plate 29 covers the upper parallel wall portion 1 externally.
  • this channelled plate groove-like recesses 30 act as throttle ducts or passages which, in conjunction with the bores 28, connect the chambers with one another and with an antechamber 31, provided between an extentsion 32 of the channelled plate 29 and part of the circumferential wall 2.
  • Suction refrigerant gas can enter this antechamber through an orifice 33, provided in the support element 5.
  • an upper parallel wall portion 34 and a lower parallel wall portion 35 are provided in the shape of a common U-shaped sheet metal element 36.
  • the two parallel wall portions 34 and 35 are connected to one another by a bridge 37 in the region of the cylinder end face.
  • Cylindrical recesses defined by portions 38, 39 are provided for accommodating a cylindrical bushing or sleeve 40.
  • Sleeve bearings 41 and 42 are fitted to the upper and the lower parallel wall portions.
  • Lugs 43, 44 are provided on both sides on the U-shaped sheet metal element 36 by bending. These lugs have fastening means, not shown, for the attachment of the stator of the drive motor and for support springs, not shown.
  • Assembly is performed by, first, sliding the cylindrical bushing 40 into the cylindrical recess defined by portions 38, 39 of the parallel wall portions 34 and 35. Then the internal wall portions 47, the support wall 46, the pipes 53-56 and the circumferential wall portion 45 are assembled separately and inserted between the parallel wall portions 34 and 35 from the side opposite the cylinder. Finally, the sleeve bearings 41, 42 are fitted. Now the whole assembly can be brazed, without the individual components having to be held together by means of an auxiliary tool.
  • the silencing chambers may be arranged in such a way that the suction gas flows, through ports in the inner band 47 provided, for example, in the shape of serrated apertures in the band edge, into the chambers 51 and from there through the pipes 55, 56 into the chamber 52. From the latter chamber it flows through the pipe 53 into the chamber 50 and through the pipe 54 into the opposite chamber. From the chamber 50 and the opposite chamber the suction gas may proceed to the suction valve chamber through bores situated in the plane of the cylinder end face.
  • a fabricated compressor housing comprising a plurality of independently prefabricated metallic components assembled together without need of tools and fasteners into a whole comprising, a prefabricated component means defining two spaced parallel walls defining a space therebetween and a circumferential wall partially enclosing said space and having portions for defining a cylindrical recess for receiving and holding therein a sleeve, a sleeve in said recess defining in use a cylinder of the compressor, an up-ended band having radially projectingstruts disposed in said space between said parallel walls and bearing on internal surfaces of said circumferential wall dividing said space into separate chambers effective in use as silencing chambers and having a lateral extension for jointly with said wall portions defining said recess into which said sleeve is received, said parallel walls each having an opening open into the interior of said up-ended band, a bearing sleeve joined to one of said walls coaxial with the opening therein, said band comprising folds externally thereof defining said stru
  • a fabricated compressor housing according to Claim 1 in which said component means comprises two superimposed pot-shaped components comprising an upper pot-shaped component and a lower pot-shaped component, said upper component having a side wall defining said circumferential wall, and said lower component having'a depending wall spaced from and outwardly of said bearing sleeve.
  • a fabricated compressor housing according to Claim 1 including prefabricated arcuate pipes circumferentially of said band extending through and held in position by said struts providing communication into respective ones of said chambers.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Compressor (AREA)
  • Exhaust Silencers (AREA)
US684301A 1966-11-18 1967-11-20 Compressor housing fabricated from prefabricated sheet metal components Expired - Lifetime US3524388A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED0051582 1966-11-18

Publications (1)

Publication Number Publication Date
US3524388A true US3524388A (en) 1970-08-18

Family

ID=7053483

Family Applications (1)

Application Number Title Priority Date Filing Date
US684301A Expired - Lifetime US3524388A (en) 1966-11-18 1967-11-20 Compressor housing fabricated from prefabricated sheet metal components

Country Status (6)

Country Link
US (1) US3524388A (da)
DE (1) DE1503410C3 (da)
DK (1) DK121879B (da)
ES (1) ES347300A1 (da)
GB (1) GB1168876A (da)
SE (1) SE332042B (da)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3981631A (en) * 1974-01-16 1976-09-21 Gast Manufacturing Corporation Compressor head construction
RU2497052C2 (ru) * 2010-11-12 2013-10-27 Зекоп ГмбХ Холодильный компрессор

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19532713C1 (de) * 1995-09-05 1997-02-06 Danfoss As Hydraulische Radialkolbenmaschine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3981631A (en) * 1974-01-16 1976-09-21 Gast Manufacturing Corporation Compressor head construction
RU2497052C2 (ru) * 2010-11-12 2013-10-27 Зекоп ГмбХ Холодильный компрессор

Also Published As

Publication number Publication date
ES347300A1 (es) 1969-01-16
DE1503410A1 (de) 1970-10-08
SE332042B (da) 1971-01-25
DK121879B (da) 1971-12-13
DE1503410B2 (de) 1973-05-30
GB1168876A (en) 1969-10-29
DE1503410C3 (de) 1973-12-20

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